Introduction 1
Preparing Your Multimeter
U1231A/U1232A/U1233A User’s Guide 7
Enabling the backlight
If viewing the display becomes difficult in low- light
conditions, press to activate the LCD backlight.
Press again to deactivate the LCD backlight.
Enabling the flashlight
If you are using the multimeter in dark places, press and
hold for more than 1 second to activate the LED
flashlight for greater visibility on your test points.
Press for more than 1 second to deactivate the LED
flashlight.
To change the timeout period or completely disable the automatic
power-off, refer to “Changing the auto power-off (APO) timeout” on
page 88.
• To conserve battery life, a user-adjustable timeout controls how long
the backlight stays on. The default timeout is 15 seconds. To change
the timeout period or completely disable the backlight timeout, refer to
“Changing the LCD backlight timeout” on page 89.
• You can also adjust the backlight’s intensity to conserve battery life.
The default intensity is high. To change the backlight’s intensity level
refer to “Adjusting the LCD backlight intensity” on page 90.
VISION ADVISORY CLAIM
The LED light source is safe for normal usage. However, staring
directly into the LED light source is not recommended as prolonged
direct exposure may be harmful to the eyes.
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